Air-entraining agent increases impermeability of hybrid fiber concrete.引气剂有助于提高混杂纤维混凝土的抗渗性。Foam has a robust and independent foam connection, water absorption in less than 25 %. impermeability.发泡有强韧而独立的发泡连接, 吸水率在25%以内. 具...
他们喜欢自家花园的幽静。They love the seclusion of their garden.度假的时候, 我较喜欢乡间相对的幽静.For holidays, I prefer the relative seclusion of the countryside.可能正是寻觅幽静的去处,或者找个猎奇的机会的欲望引诱着人们进入地球的深处.Perhaps it is the desire for solitude or the ch...
They kept phoning and writing, badgering me to go back...他们不停地给我打电话、写信，软磨硬泡要我回去。I've never done any sustained writing, but that might be one of my next directions.我以前从未尝试过持续写作，不过那可能是我下一步努力的方向之一。Writing is a good too...
Development of aquaculture offers another means of supplying man with fish protein.水产养殖业的发展为人类获取鱼蛋白提供了另一种手段.Sinonovacula constricta ( Lamarck ) , a kind of mollusks , is important in marine aquaculture.缢蛏 ( Sinonovaculac...